| SL0056 | MACHON B V | Pitsmoor Hotel Fishing Club | 16/12/2011 | 01/01/2012 | indefinite |
| SL0025 | MACKINDER Chris Taylor & Mr Gavin | Hallam Football Club 1860 Suite | 12/11/2013 | 01/01/2012 | indefinite |
| SL6649 | MACPHEARSON Tania | Tinsley Meadows Primary Academy | 18/05/2026 | 18/05/2026 | indefinite |
| SL6609 | MACPHERSON Kimberley | Oh GOSH Fundraising | 04/02/2025 | 04/02/2025 | indefinite |
| SL5969 | MALLINSON Darren | Sheffield M.E. Group | 22/12/2006 | 01/01/2007 | indefinite |
| SL4388 | MANAGER | Y W C A | 17/12/2010 | 01/01/2011 | indefinite |
| SL4355 | MANN A M | Marlcliffe Primary School | 25/11/2010 | 01/01/2011 | indefinite |
| SL4592 | MARK B R | Handsworth Old Rectory Community Centre | 18/11/2010 | 01/01/2014 | indefinite |
| SL1443 | MARSDEN Jean | Hollinsend Elderly Citizens Social Club | 19/12/2019 | 01/01/2011 | indefinite |
| SL6325 | MARSDEN Rachel | Tommy's | 10/10/2012 | 10/10/2012 | indefinite |